SGER: Service Paths -- Optimizing end-to-end Behaviors in Distributed Service Architectures

SGER：服务路径——优化分布式服务架构中的端到端行为

• 批准号: 0541199
• 负责人: Karsten Schwan
• 金额: $ 10万
• 依托单位: Georgia Tech Research Corporation
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2005
• 资助国家: 美国
• 起止时间: 2005-08-01 至 2007-07-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0541199&HistoricalAwards=false
• 关键词: SGER; Service; Paths; Optimizing; end

Distributed applications and the hardware/software platforms on which theyrun are becoming increasingly complex. As a result, it is also becomingincreasingly difficult to understand and then manage application behavior,particularly for applications that are critical to the ability oforganizations to provide services for which they have contractual obligations.Georgia Tech's `Service Paths' project is developing technologies for(1) dynamically discovering the critical `paths' applications followthrough distributed sets of services, and (2) managing such paths inorder to improve an application's ability to meet dynamic service levelagreements. Service path technologies will substantially improve systems'abilities to provide end-to-end guarantees and enhance the underlyingsystems' capabilities to provide such guarantees. Concrete outcomes includenew system-level methods and abstractions to better understand currentapplication behavior, new middleware abstractions suitable both forconstructing and managing large-scale software overlays across manymachines, and experimental results attained with virtualized platformslike PlanetLab and with novel hardware support for runtime platformvirtualization.Broader significance: the costs of developing and changing modern ITinfrastructures are now dominated by personnel rather than hardware.Technology providers have reacted to this fact by making it increasinglyeasy to develop complex distributed applications. Without alsounderstanding and then being able to manage and control such applications,cost savings attained at development time cannot be translated to thecontinuing cost savings required to make U.S. industry competitive withlow-cost, international providers.

分布式应用程序及其运行的硬件/软件平台正变得越来越复杂。因此，理解和管理应用程序行为也变得越来越困难，特别是对于那些对组织提供有合同义务的服务的能力至关重要的应用程序。佐治亚理工学院的“服务路径”项目正在开发以下技术：(1)动态发现应用程序遵循分布式服务集的关键“路径”，以及(2)管理这些路径，以提高应用程序满足动态服务水平协议的能力。服务路径技术将大大提高系统提供端到端保证的能力，并增强底层系统提供这种保证的能力。具体的成果包括新的系统级方法和抽象，以更好地理解当前的应用程序行为，新的中间件抽象适用于构建和管理跨多台机器的大规模软件覆盖，以及通过像PlanetLab这样的虚拟化平台和对运行时平台虚拟化的新颖硬件支持获得的实验结果。更广泛的意义：开发和改变现代it基础设施的成本现在由人员而不是硬件主导。技术提供商对这一事实的反应是使开发复杂的分布式应用程序变得越来越容易。如果不理解并能够管理和控制这些应用程序，在开发时获得的成本节约就不能转化为使美国工业与低成本国际供应商竞争所需的持续成本节约。